David K. Joyce

Rare Minerals

Unusual and rare minerals that I felt would be better here than in some other category! :)

All prices in Canadian dollars. For payment in US$, deduct 23% or multiply by 0.77.

Click on any of the following thumbnails to view a larger image of the specimen.

ProbertiteRare Minerals
  • Item #4382
  • Probertite
  • 6.3x2.0x0.7 cm
  • Largest Crystal Size: n/a
  • $25.00
  • Cheverie

  • Nova Scotia, Canada
  • White aggregates and needles of probertite are present on one end of this thin gypsum fragment. Nice!
Vuagnatite, McguinnessiteRare Minerals
  • Item #21935
  • Vuagnatite, Mcguinnessite
  • 6.4x5.0x2.1 cm
  • Largest Crystal Size: 1mm
  • $75.00
  • Ukiah
  • Mendocino County
    California, USA
  • The top of this plate is largely covered with transluscent, white-colourless vuagnatite crystals (some very sharp!) and green, hemispheres of greenish mcguinnessite. Nice combination!
Semenovite-(Ce), EpididymiteRare Minerals
  • Item #15007
  • Semenovite-(Ce), Epididymite
  • 6.5x4.4x2.2 cm
  • Largest Crystal Size: micro
  • $75.00
  • Taseq
  • Ilimaussaq
    Greenland
  • A couple of isolated, well formed semenovite crystals are present in a vug mostly lined with excellent, colourless, epididymite crystals.
Colemanite, TodorokiteRare Minerals
  • Item #21920
  • Colemanite, Todorokite
  • 5.5x5.0x3.9 cm
  • Largest Crystal Size: c-3mm, t-micro
  • $35.00
  • Twenty Mule Team Canyon
  • Death Valley
    California, USA
  • What a great locality name! History! Also very nice crystals of this boron-rich mineral, associated with botryoidal/dendritic todorokite in cavities on the side of the specimen!
MerwiniteRare Minerals
  • Item #21931
  • Merwinite
  • 5.5x3.2x1.4 cm
  • Largest Crystal Size: 1mm
  • $35.00
  • Crestmore Quarry
  • Riverside County
    California, USA
  • Whitish crystals of this unusual calc-silicate mineral are embedded in this piece. Unusual.
ZunyiteRare Minerals
  • Item #21926
  • Zunyite
  • 6.6x4.3x2.8 cm
  • Largest Crystal Size: 1mm
  • $75.00
  • Big Bertha Mine
  • Quartzite
    Arizona, USA
  • This fragment of quartz.mica matrix contains many hundreds of colourless to beigey zunyite crystals. The crystals are very well formed and are, generally, combinations of cube and octahedron with the octahedron dominating some times. Rich sample with many sharp crystals.
Thomsenolite, Siderite, Sphalerite, RalstoniteRare Minerals
  • Item #20931
  • Thomsenolite, Siderite, Sphalerite, Ralstonite
  • 12.4x9.0x7.5 cm
  • Largest Crystal Size: 6mm
  • $425.00
  • Ivigtut Deposit
  • Ivittuut, Arsuk Fjord
    Greenland
  • There are cavities all over this specimen that are lined with superb, elongated, terminated thomsenolite crystals. Of course as is usually the case, the thomsenolite is white but has a light coating of iron oxide that give the specimen its classic look. Matrix appears to me massive thomsenolite with a few small siderite and sphalerite crystals embedded in it. As well, there are small cube-octahedral ralstonite crystals on the thomsenolite crystals, inside the vugs. We don't seem much of this material around any more!
CornubiteRare Minerals
  • Item #21932
  • Cornubite
  • 3.5x2.9x2.2 cm
  • Largest Crystal Size: micro
  • $55.00
  • Hardshell Mine
  • Santa Cruz County
    Arizona, USA
  • Lots of tiny, green crystals of this rare copper arsenate in and on the gossanous matrix of this piece.
RaiteRare Minerals
  • Item #21959
  • Raite
  • 3.8x2.8x2.0 cm
  • Largest Crystal Size: micro
  • $65.00
  • Indian Mountain
  • Kola Peninsula
    Russia
  • There are many open spaces in this matrix that reveal beautiful crystal sprays of the rare Sodium-manganese-titanium silicate raite. There are supposed to be zorite crystals(?) in the cavities as well but I cannot recognize them. Maybe you can?! Very nice raite!
CarparthiteRare Minerals
  • Item #21937
  • Carparthite
  • 7.0x6.0x5.1 cm
  • Largest Crystal Size: 6mm
  • $65.00
  • Picacho Mine
  • San Benito Co.
    California, USA
  • This specimen has some openings that contain yellowish crystals of this unusual mineral that is composed of just carbon and hydrogen! Some nice crystals here!
StrengiteRare Minerals
  • Item #21945
  • Strengite
  • 4.3x2.5x1.6 cm
  • Largest Crystal Size: 0.5mm
  • $40.00
  • Indian Mountain
  • Cherokee County
    Alabama, USA
  • Beautiful well formed crystals are present both on the darker oxide matrix and as thicker covering on the other side of the specimen. Not all crystals are undamaged but there are many that are perfect and excellent for photography!
KleiniteRare Minerals
  • Item #21951
  • Kleinite
  • 5.8x3.0x3.2 cm
  • Largest Crystal Size: 1.5mm
  • $65.00
  • McDermit
  • Humboldt County
    Nevada, USA
  • Much of the front of this specimen is covered with rough but coherent crystals of kleinite. When I fist saw this mineral, I thought perhaps it was a uranium mineral, it is so yellow. No, it is a mercury mineral. Rare!
Felsobanyaite, GypsumRare Minerals
  • Item #21955
  • Felsobanyaite, Gypsum
  • 3.7x2.8x2.8 cm
  • Largest Crystal Size: n/a
  • $40.00
  • Chickerell
  • Dorset
    England
  • OK, it is not pretty! It IS unusual, though! White aggregates of this unusual aluminum sulfate mineral intermixed with elongated growths of gypsum. Was labelled originally as "basaluminite", which is a pseudonym for felsobanyaite. Unusual!
NormanditeRare Minerals
  • Item #21958
  • Normandite
  • 4.5x4.0x2.4 cm
  • Largest Crystal Size: 14mm
  • $85.00
  • Kola Peninsula
    Russia
  • This specimen shows several sprays of deep red-brown normandite embedded in matrix. I have seen many specimens of astrophyllite labelled normandite but this is not one. I've examined it closely and am convinced that it is normandite. Rich specimen of this rare mineral!
UssingiteRare Minerals
  • Item #21961
  • Ussingite
  • 4.7x4.3x3.2 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Mt. Punkurauj
  • Chibiny Massif, Kola Peninsula
    Russia
  • A fragment of massive ussingite ranging from light mauve to purple. Rich!
ArrojaditeRare Minerals
  • Item #21979
  • Arrojadite
  • 8.0x5.9x1.1 cm
  • Largest Crystal Size: 4mm
  • $110.00
  • Rapid Creek

  • Yukon, Canada
  • A plate of crystals of both quartz and arrojadite. The arrojadite crystals are sharp, well formed crystals that cover 40-50% of the top of this plate with quartz crystals covering the rest. Nice!
TellurobismuthiteRare Minerals
  • Item #21991
  • Tellurobismuthite
  • 5.6x5.1x3.5 cm
  • Largest Crystal Size: 2mm cleavage
  • $45.00
  • Fyresdal

  • Norway
  • Lots of bright, lustrous cleavages of this unusual telluride scattered throughout this quartz matrix. Rich!
Brewsterite, BaryteRare Minerals
  • Item #21992
  • Brewsterite, Baryte
  • 3.5x3.4x2.2 cm
  • Largest Crystal Size: 2mm
  • $35.00
  • Strontian
  • Argyllshire
    Scotland
  • This thick plate has its top covered with white crested baryte crystals which have a generous sprinkling of sharp brewsterite crystals. There is sphalerite or wurtzite embedded in the matrix. From the type locality!
MicroliteRare Minerals
  • Item #22171
  • Microlite
  • 0.9x0.7x0.6 cm
  • Largest Crystal Size: as above
  • $65.00
  • Rutherford, #2 Mine
  • Amelia
    Virginia, USA
  • A small specimen but a very nice crystal of microlite from an old Virginia location. Sharp faces all around. The crystal was attached on the bottom. Nice example!
Clinoptilite-CaRare Minerals
  • Item #22167
  • Clinoptilite-Ca
  • 3.7x3.7x2.3 cm
  • Largest Crystal Size: 2mm
  • $45.00
  • Succor Creek

  • Oregon, USA
  • This geode-like, quartz nodule is hollow and completely lined with tabular, sharp, gemmy clinoptilite crystals. Excellent!
LevyneRare Minerals
  • Item #22168
  • Levyne
  • 3.4x3.0x1.9 cm
  • Largest Crystal Size: 3mm
  • $45.00
  • Beech Creek

  • Oregon, USA
  • Sharp, hexagonal-platy crystals of this unusual zeolite are present in a contrasting black vug in basalt. There are crystal sections that are 9mm across but the largest complete crystal is 3 or 4mm across. Beautiful!
Sarabauite, StibniteRare Minerals
  • Item #22548
  • Sarabauite, Stibnite
  • 6.2x4.5x1.7 cm
  • Largest Crystal Size: n/a
  • $55.00
  • Sarabau Mine
  • Sarawak, Borneo
    Malaysia
  • Rich, red sarabauite is associated with metallic stibnite, both being embedded in calcite and wollastonite. This is the type locality for this unusual antimony mineral!
EuxeniteRare Minerals
  • Item #22655
  • Euxenite
  • 1.9x1.3x0.5 cm
  • Largest Crystal Size: as above
  • $55.00
  • Ankazobe

  • Madagascar
  • A flattened cluster of slightly radioactive euxenite crystals. The crystals have a thin creamy alteration coating and an interior of resinous dark brown.
MendipiteRare Minerals
  • Item #22656
  • Mendipite
  • 3.7x2.2x1.2 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Merehead Quarry
  • Mendip, Somerset
    England
  • A solid zone of mendipite, the rare lead oxy-chloride mineral from the type locality.
BoleiteRare Minerals
  • Item #22664
  • Boleite
  • 1.3x0.8x0.8 cm
  • Largest Crystal Size: 2.5mm
  • $35.00
  • Amelia Mine
  • Baja
    Mexico
  • A 2.5mm boleite crystal attached to a small amount of matrix, which, in turn, is affixed to, ostensibly, the original matrix by a piece of putty. The matrix is very friable! Sharp, deep-blue boleite crystal!
Jamborite, SideriteRare Minerals
  • Item #22676
  • Jamborite, Siderite
  • 11.8x7.8x3.8 cm
  • Largest Crystal Size: 3mm
  • $75.00
  • Sterling Mine
  • Antwerp
    New York, USA
  • Sharp, acicular pseudomorphs of jamborite after millerite are tucked away here and there in interstices of this wide, shallow siderite crystal pocket. Classic Sterling Mine! R
JacobsiteRare Minerals
  • Item #22690
  • Jacobsite
  • 8.4x5.0x2.2 cm
  • Largest Crystal Size: 2mm
  • $75.00
  • Jacobsberg Mine
  • Varmland
    Sweden
  • One end of this piece is a zone showing many black crystals of jacobsite embedded in calcite. Many of the crystals are sharp, whole crystals, exactly what you would expect of this mineral. Type locality! R
HausmanniteRare Minerals
  • Item #22705
  • Hausmannite
  • 3.2x2.2x1.7 cm
  • Largest Crystal Size: 8mm
  • $35.00
  • Kuruman
  • N. Cape Province
    South Africa
  • Very sharp, pseudo-octahdral crystals of this tetragonal manganese oxide are perched nicely on this matrix. Very good example!
DundasiteRare Minerals
  • Item #22739
  • Dundasite
  • 4.7x3.4x1.5 cm
  • Largest Crystal Size: 0.5mm
  • $35.00
  • Dundas
  • Tasmania
    Australia
  • Lots of spherules of white dundasite on this gossanous matrix. From the famous crocoite area!!